Road raking and sweeping device



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CHARLES A. GUNDERSON AND RICHARD P. IIIASON, OE ESCANABA, MICHIGAN.

ROAD BAKING AND S NEEPIN G DEVICE.

Application filed September To all whom it may concern:

Be it known that we, CHARLES A. German- SON and RICHARD P. MASON,citizens of the United States, residing at Escanaba, in the county ofDelta and State of Michigan, have invented certain new and usefulImprovements in Road Raking and Sweeping Devices, of which the followingis a specification, reference being had therein to the accompanyingdrawings.

This invention relates to a road raking and sweeping device constructedin such manner that when it is drawn along a road the loose stones onthe road will be swept laterally from the road and delivered in a row atone side of the line of travel of the apparatus.

Further objects and advantages of the in vention will be set forth inthe detailed description which follows.

In the accompanying drawing:

Fig. 1 is a plan view of a road raking device constructed in accordancewith the invention;

Fig. 2 is a transverse vertical sectional view upon line 22 of Fig. 1;and

Fig. 3 is a detail view of one of the runners of the machine,hereinafter described.

Like numerals designate corresponding parts throughout the severalfigures of the drawing.

The frame of the road raking machine comprises a short runner 5, a longrunner 6. a transverse connecting bar 7 and oblique braces 8 and 9 bywhich the bar 7 is held in a position substantially at right anglest-othe runner 6.

By referring to Fig. 2, it will be seen that the lower edge of thetransverse bar 7 lies above the ground level or above the lower edges ofthe runners 5 and '6 so that when the apparatus is drawn along a roadinthe direction indicated by the arrow a", in Fig. 1, stones may passbeneath the bar 7 and between the runners 5 and 6. The shanks 10 ofhooks 11 extend vertically through the bar 7 and the forward ends ofchains 12, 13 and 14 are connected to the hook. The rear ends of thesechains are connected to the runner 6 and the respective points of theattachment of the chains is such that each chain lies in a paraboliccurve, as the machine is drawn over the road. The chains 12 are somewhatheavier or larger in diameter than the chains 13 and the chains 13 are6, 1921. Serial No. 498,623.

in turn heavier or somewhat larger in diameter than the chains 14-. Thechains at the left of the structure are so much longer than the chainsat the right of the structure that they hug the ground throughout aconsiderably greater distance and this, taken with the difference indiameter and weight of the chains results in the larger stones beingswept from the road by the short heavy chains and the smaller stonesbeing caught and worked from the road by the lighter chains. The resultis that a highly efficient device is produced. which will sweep a roadpractically free of stones at a very small cost. It will be noted thatthe apparatus itself is of very simple and economical construction andthat it is of such a nature as to require very little power to draw italong the road.

It is to be understood that the invention is not limited to the preciseconstruction set forth but that it includes within its purviewwhateverchanges fairly come within either the terms or the spirit of theappended claims.

Having described our invention what we claim is:

1. A. device of the character described comprising a frame having alongitudinally extending member and a transversely extending member thelatter being at the front end of the frame, of a plurality of chainshaving their ends attached to said members at spaced points in thelength-thereof and of such length as to describe a curve between saidmembers.

2. A road raking device comprising a pair of runners a transverselyextending bar carried by said runners at the front end thereof andhaving its under edge spaced above the ground. a plurality of chainshaving their forward ends attached to said= transverse bar at spacedpoints in its length and their rear ends attached to one of saidrunners. said chains being of such length as to describe a curve in thetravel of the machine.

3. A structure as recited in claim 2 where in said chains are of varyingdiameters and the shorter chains are those of greatest diameter.

In testimony whereof we hereunto afiix our signatures.

CHARLES A. GUNDERSON. RICHARD P. MASON.

